[OSM-talk] Map search accuracy

[Tom Hughes]

In message <yek8x3pv2is.fsf at dellow.uk.cyberscience.com>
        Tom Hughes <tom at compton.nu> wrote:

> In message <1198161611.5262.96.camel at tomchancepc.BIOREG.LOCAL>
>         Tom Chance <tom at acrewoods.net> wrote:
>
>> I've noticed that searching for small features exposes a slight
>> inaccuracy with the placement of the red arrow. For example, searching
>> for "Edgecombe House" and then zooming in twice shows this:
>>
>> http://www.openstreetmap.org/?lat=51.470354&lon=-0.085346&zoom=18&layers=B0T
>>
>> Which is not exactly far off, but then it is pointing at the wrong
>> building so if you followed the arrow at the default zoom level from the
>> search link (which doesn't show building names to help you spot the
>> mistake) you'd end up in the wrong place!
>
> Well the first thing you need to do is to work out what part of
> the tool chain is at fault - are those the correct coordinates
> or not is the first question?

Based on this:

  http://maps.google.co.uk/maps?f=q&hl=en&geocode=&time=&date=&ttype=&q=51.470354,-0.085346&ie=UTF8&ll=51.470357,-0.086893&spn=0.00403,0.013036&t=h&z=17&om=1

it looks like the we are pointing at the coords right, and the problem
is the location returned by the namefinder.

Tom
-- 
Tom Hughes (tom at compton.nu)
http://www.compton.nu/